#101B4C#101B4C

#101B4C is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.092 H 269.0°. Best body text is #FFFFFF at 16.37:1 contrast (WCAG AA passes).

Color values

HEX	#101B4C
RGB	rgb(16, 27, 76)
HSL	hsl(229, 65%, 18%)
HSV	hsv(229, 79%, 30%)
CMYK	cmyk(78.9%, 64.5%, 0%, 70.2%)
CIE-LAB	lab(12.06, 14.98, -31.77)
CIE-LCH	lch(12.06, 35.12, 295.24°)
OKLab	oklab(24.76% -0.0016 -0.0916)
OKLCH	oklch(24.76% 0.092 269)
XYZ	xyz(1.9097, 1.4156, 7.0087)
Luminance	0.0142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B4C #4C4110

analogous

#10394C #101B4C #23104C

triadic

#101B4C #4C101B #1B4C10

tetradic

#101B4C #4C1039 #4C4110 #104C23

square

#101B4C #4C1039 #4C4110 #104C23

split-complementary

#101B4C #4C2310 #394C10

monochromatic

#050919 #050919 #101B4C #1B2D7F #253FB1

Accessibility & contrast

On white

16.37

#101B4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#101B4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B4C

16.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B4C	#FFFFFF	#000000	##FFFFFF
##101B4C	1.00	16.37	1.28	16.37
#FFFFFF	16.37	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224E

Deuteranopia (green-blind)

#001D4B

Tritanopia (blue-blind)

#002730

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101b4c;
/* rgb */ color: rgb(16, 27, 76);
/* oklch */ color: oklch(24.8% 0.092 269.0);

Tailwind

colors: {
  custom: {
    50: '#58577e',
    500: '#101b4c',
    950: '#000000',
  },
}

SCSS

$custom: #101b4c;
$custom-light: #58577e;
$custom-dark: #000000;

JSON

{
  "hex": "#101b4c",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 76
  },
  "hsl": {
    "h": 229,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.24763,
    "c": 0.09164,
    "h": 269
  },
  "luminance": 0.01416
}

Semantic roles & 50–950 ramp

primary

#101B4C

secondary

#867632

accent

#C940E8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101B4C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →